<!-- 删除: <div id="particles-js"></div> -->
<style>
    /* ... existing code ... */
    body {
        background: url('zmz.jpg') no-repeat center center fixed;
        background-size: cover;
        color: #333;
        line-height: 1.6;
        padding: 20px;
        position: relative;
        overflow-x: hidden;
        min-height: 100vh;
    }
    /* ... existing code ... */
</style>

